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A sac is formed when a weak part of a blood vessel wall bulges out, what is it called?1. Atherosclerosis2. Aneurysm3. Anastomosis4. Arteriosclerosis

Answer» Correct Answer - Option 2 : Aneurysm

Explanation:

​Aneurysm

  • Aneurysm, widening of an artery that develops from weakness or destruction of the medial layer of the blood vessel. 
  • With the constant pressure of the circulating blood within the artery, the weakened part of the arterial wall becomes enlarged.
  • Enlargement leads ultimately to serious and even fatal complications from the compression of surrounding structures or from rupture and hemorrhage.
  • Aneurysms may occur in any part of the aorta or major arteries. 

  • Atherosclerosis, sometimes called "hardening of the arteries," occurs when fat, cholesterol and other substances build up in the walls of arteries.


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